Graphics:
Over 1000 separate graphics frames, on 240 individual files. Many frames are combined into one graphics file to make it faster.
68.7 MB.
Here is one of our graphics sheets, from the Caterpillar page (page 6).

Music:
2 Music tracks.
6.9 MB.
You can download the music from The Artifacts (it’s free) here.

Code:
Around 12,000 lines of code, not counting framework.
Around 5 MB.
Here is a sample from the Fireflies page (Page 20), this piece of code adds a new firefly.